package com.lin.ovc.pomodoro.filter;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.lin.ovc.pomodoro.entity.User;
import com.lin.ovc.pomodoro.service.UserService;
import com.lin.ovc.pomodoro.utils.JwtHelper;
import com.lin.ovc.pomodoro.utils.R;
import com.lin.ovc.pomodoro.utils.ResponseUtil;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.util.matcher.AntPathRequestMatcher;


import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.ArrayList;

public class TokenLoginFilter extends UsernamePasswordAuthenticationFilter {

    private AuthenticationManager authenticationManager;
    private UserService userService;

    public TokenLoginFilter(AuthenticationManager authenticationManager, UserService userService) {
        this.authenticationManager = authenticationManager;
        this.userService = userService;
        this.setPostOnly(false);
        this.setRequiresAuthenticationRequestMatcher(new AntPathRequestMatcher("/user/login", "POST"));
    }

    //1 获取表单提交用户名和密码
    @Override
    public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response)
            throws AuthenticationException {
        //获取表单提交数据
        try {
            User user = new ObjectMapper().readValue(request.getInputStream(), User.class);
//            System.out.println(user.toString());
            return authenticationManager.authenticate(new UsernamePasswordAuthenticationToken(user.getUsername(), user.getPassword(),
                    new ArrayList<>()));

        } catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException();
        }
    }

    //2 认证成功调用的方法
    @Override
    protected void successfulAuthentication(HttpServletRequest request,
                                            HttpServletResponse response, FilterChain chain, Authentication authResult)
            throws IOException, ServletException {
        //认证成功，得到认证成功之后用户信息
        org.springframework.security.core.userdetails.User user =
                (org.springframework.security.core.userdetails.User) authResult.getPrincipal();
//        User user = (User)authResult.getPrincipal();
        QueryWrapper<com.lin.ovc.pomodoro.entity.User> wrapper = new QueryWrapper();
        wrapper.eq("name", user.getUsername());

        //根据用户名生成token
        String token = JwtHelper.createToken(userService.getOne(wrapper).getId(), user.getUsername());
        System.out.println(token);
        //把用户名称和用户权限列表放到redis
//        redisTemplate.opsForValue().set(user.getCurrentUserInfo().getUsername(),user.getPermissionValueList());
        //返回token
        System.out.println(token);
        ResponseUtil.out(response, R.ok().data("token", token));
    }
}
    //3 认证失败调用的方法
//    protected void unsuccessfulAuthentication(HttpServletRequest request, HttpServletResponse response, AuthenticationException failed)
//            throws IOException, ServletException {
//        ResponseUtil